#include <stdio.h>
 
void swap(int param1, int param2) {
	int temp;
	temp = param1;
	param1 = param2;
	param2 = temp;
}

int main() {
 	int x = 5,y = 10;
 	swap(x,y);
 	printf("交换后: x = %d, y = %d\n", x, y);
    return 0;
}